Improvement in apparatus for soldering in a vacuum



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN APPARATUS FOR SOLDERING IN A VACUUM.

Specification iforming part ofLetters Patent No. 8,940, dated May 1l., 1852.

V10 all whom, it may concern.'

Be it known that we, JOSEPH B. HORNE and JOHN R. HORNE, of Xenia, in the county of Greene and State of Ohio, have invented a new and useful Apparatus for Soldering in Vacuum; and we do hereby declare the following to be a full, clear, and exact description of the nature, construction,l and operation thereof, reference being had to the annexed drawing, making part of this speciiication.

In the annexed drawing, which is an axial. or central section through the apparatus, a is a can, and b its disk, to be soldered. c is the glass receiver, d, the air-pump.I e is a gland or neck, which is screwed fast into the top of the receiver. This neck is nel y screw-threaded on its inner side to t the correspondinglythreaded exterior head f of a tube, f g h, of whichA the lower portion, g, is as much inclined from the perpendicular as will cause the lower end ofthe tube to describe a circle corresponding to that of the disk to be soldered. fi j is a heater, the bit j of which is made somewhat smaller than the interior of the tube.

The operation is as follows: A disk being placed over the opening, and solderlaid along its edge, a pieceef/wet leather corresponding to the rim of the receiver is-laid -upon the top of the can, then the rfeceiyer beingso applied that the circle described bythe "lower end of the tube shall correspond to that of the disk,

and the air being exhausted by lthe puni the tube is screwed down until sufficiently near to the solder, then the red-hot bit is inserted, and the tube moved quickly round. Itis Vnecessarythat the operation should be performed thus piecemeal, `as otherwise the solder is liable to all run into the can.

Having thus described the nature of our invention, what we claim therein as new, and desire to secure by Letters Patent, is-

The application to the purpose of soldering in vacuum oi' a hollow bent tube, f g h, for the reception of a heater, the said tube being closed at the lower end, and provided with a screw-thread, f, at its upper end f1tting tightly within a screw neck or collar, e, upon the glass receiver of an ordinary airpump, or other suitable instrument for producing a vacuum, the bent form of the tube bringing it to bear during its rotation upon the perimeter of the circular disk which closes the aperture.

In testimony whereof we have hereunto set our hands before two subscribing witnesses'.

J. B. HORNE. J. R. HORNE. Witnesses as to J. B. Horne:

GEo. H. KNIGHT, I. H. HOENE, Jr. Vitnesses as to J. R. Horne:

CHAs. NY. KEALHOEER, B. NEsBiTT. 

